Log barker



March 17, 1931. Q B, THORNE 1,796,633

Los BAKKER Filed 001:. 22. 1928 2 sheets-sheet 1 l5 I8 '4' 2z la,

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March 17, 1931. C, B. THORNE LOG BARKER Filed Oct. 22. 1928 2 Sheets-Sheet 2 4' FIGS.

INvENToe. @.JM. 5 huma-wifi ATToEM Patented Mar. 17, 1931 y "cARLnUscHrHORNE, OF HAwxEsBUmr, ONTARIO, CANADA LOG lBAKKER `Application filed Qctober 22, 1928. Serial No. 314,248.

Y The invention relates to a log barker, as described in thepresent specification and illus- `t'rated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel features of construction pointed out lbroadly and specifically in the claims or Y novelty following a description containing anvexplanation in detail of an acceptable form ofthe invention. y

4The objects ofthe invention are "to mainl. tain a steady mechanical driveof the logs l through aV pocket or on a carrier or other means of-support, and during this mechanical drive keep the logs parallel to one another and raise, lower, roll and lengthwise tilt them and so disturb the logs to such an eX- tent as will insure a good rubbing 'for the removal of the bark; to insure a steady and large output from any one installation of l barkers, andthereby increase the turnover of i a mill particularly in the production of pulp for paper and" silk manufactures; to maintain the barking machine at a reasonable cost-by the use of Waste steam, air or other expansile fluid in the operation of the `many i reci rocatinfr membersand Generall to provide a durable, economical and eiiicient means of stripping the logs of their bark covering.

In the drawings, Figure 1 a longitudinal sectional view ofv a plurality of reciprocating members operating ina confined area.

Figure 2 is aplan view ofthe invention as 'illustrated in Figure 1.

f Figure 3 is a side elevational view of the same form of mechanical,driving and agi` tating means l applied to ai conveyer system charge end, and

forlthecontinuous operation of rubbing and conveying between the `feed and the dis` .showing retaining andretardingchains. yo n V Figure 4 is a sectional detail of the valve "casing and intakeconnectionsf. l

l being mounted on the shaft 27, which extends Figure 5 is a plan View of the invention as illustrated in Figure 3.

Figure 6 is a detail oi the connections and feed of the driving fluid.

Figure 7 is a sectional detail of a pocket f showing the combined use of the driving means with an agitating cam.

Like numerals of reference indicate correspending parts in the various figures.

Referring to the drawings, the numeral 1.0 5A indicates a plurality of cylinders leaning forwardly and suitably supported in a frame 11, and having the intakes 12 and the exhaust ports 13, the `Said frame 11 forming a partei the structure of a pocket 14, this pocket being of considerable length and having the inclined way 15, forming the front wall, and the inclined Way 16 forming the rear wall and leading to the runway 17.

The plungers 18 reciprocate in the cyliir 65 ders 10 and the logs are piled along the bottom of the pocket on top of these plungers.

The cylinder 19 and plunger 2O operating therein are situated beyond the end of Vthe pocket and the plunger operates through the opening 21 in the rear wall, said cylinder 11) having also an intake and exhaust. The cylinders and plungers extend in a central line under the bottom 22 of the pocket, which has a longitudinal slot Q3, through which the plungers project iuto the pocket.

These plungers are normally held down by the pile of logs, but ou aljlplying cfipau sile fluid, such as steam, air or other Huid, force, the plungers operate against the logs, of course there may be one, two,ithrcc or more rows of plungers as desired, but only one row is shown here to illustrate the invention. l

The intakes 12 are connected in the dcsired order of operation to the ports 24 in the valve casing25, and inside the valve casing a rotary valve 26 is operated, said rotary valve Cal real support of the logs'.

through the reduction gear 28 to the motor 29, or to any other suitablepower.

The valve is journalled in' the bearings 30 in the valve casing and in the valve casing head 31 to which the feed pipe 32 is'secured, said feed pipe'communicating with the inte-v rior of the valve casing and valve through the port 33 in said head, thus the many plungers may be operated in any manner clesired by the operator, as it is all a matter of selecting ports for the several intakes, consequently the disturbance of the logs by the movement of the plungers is variedl in order to secure the most efficient upheaval of the pile for rubbing purposes.

In so far as the plunger is concerned, it is timed to operate at certain intervals in Vorder that logs may be regularly lifted to the runway 17 and thus keep the continuous operation of the barking machlne 1n proper order.

In Figure 3 the sides of the pocket may be in the form of rollers, andthese rollers 34 are shown in verticalarra-ngement and pivotally secured at their upper and lower ends, so that the progress of the logs in the pocket will be much facilitated.' i

In Figures 3 and 5 another means is shown of using this'mechanical driving and disturbing means, in which the cylinders 35 are arranged in a plurality of rows forming the rlhe plungers 36 engage the logs and keep moving the pile forwardly and at the same 'time upheaving them.

The inclined way 37'for1ns the feed end and the inclined way 38 forms the discharge end and the logs areretained at the upper end by the chains 39, and chains 40 are also stretched along the bottom between the plungers while the side guides 41 or other guiderolls serve to help the pile in a continuous movement forwardly.

In this form of the invention the main idea is to eliminate the pocket where such structures are inconvenient and simply to retain the pile of logs together for a sufficient period to accomplish the purpose of the disturbance, that is tov say, to strip the bark oft, of course it may be advisable to usev cams to create part of the disturbance, or to facilitate the delivery or even to help in thefeed so long as the essential feature of the invention, that is to'say, the rubbing of the logs is done with success.

VIn the operation of this invention the logsV are fed to the entrance of the disturbed area and piled up in said area until there isa considerable depth of logs,and this feed is continued, and duringthe period while thelogs are in the disturbed area they are continually pushed and driven fcrwardly at various A points by theseveral plungers. this the 'pile Presents en appeared@ et ceetinueusfupheaval so thatthey roll against one another backwards and forwards, until the bark is rubbed o by the time that they reachthe end of thedisturbed area or bythe time they have been in the disturbed area long enough they Y are delivered on to a runway and discharged and ready for whatever manufacture they are to be employed in. Y Y

It will be noticed that in Figures 3 and 4 the cylinders are perceptibly dipped in the centre to give the disturbed area a dish-like form, so that while they are being driven forwardly there is always an inclination for the logs to meet in the'c'entre and this serves to retard them from too quick delivery, Ybut there may be many ways of confining the logs long enoughforstripping purposes, and it is only 'for' clearness in description of the invention that two ways have been shown and described.

It has been mentioned that the present driving means may be used with an agitating cam, so this has been shown in Figure 6, in which the cam 42 does the ag-itating while the driving means helps the logs outwardly.

What I claim is:

11 In a log barker, a log receptacle, a plu-l operated, Yand supplementary disturbing means engaging the log-s and pushing them in a forward.' direction.

3. In a log-y barker, chain conveyers adapted to support a pile of logs between a feed.

chute and Vdelivery chute, plungers recipiocated' in forwardly inclined cylinders between said chainsl and varying in respect to the timing .of the forward strokes of the several plungers and a chain extended over; the pile of logs and in contact'therewith and restricting'theingress and egress openings to the conveyers. l l Y 4. A log barker comprising a log support,

plungers operating through said support and disturbing said logs, cylinders having intakes and exhaust ports and containing said plungers, and a valve casing having ports connected to thek several intakes and having an inlet port anda valve in Asaid casing haveY ing a port registering with said, por-ts by selection.l Y i .5, In. a 10s barks?, a few of projectile members forming Serpents under 'a pile' of loss and'V aimed in a .fervard drecteli in lief" spoot to the movement of the logs and means for shooting saidy projectiles and coincidently telling, and driving Said loge 6- 11i @'10s barter', 10s peels-et and, a 1701i.-

gitudinal row of reciprocating members suit- Y t ably driven and forming supports and r- 

